[mapguide-users] Navigation Example .NET

[Kenneth]

If you modify the layer visibility, using serverside code, it will not 
work correctly with the AJAX viewer.
The problem is that the AJAX client has a small cache of visible layers, 
and calling map.refresh() on the client does not invalidate this cache.

The symptoms will be that no tooltip is displayed for the layer, and the 
layer never shows up in the legend.
I've posted this bug on the mapguide-internals list, and a workaround.

Regards. Kenneth, GEOGRAF A/S




Berdel, Brian wrote:
>
> Cool, thanks! I'll give it a try.
>
>  
>
> Brian Berdel
>
> McMahon Associates, Inc.
>
> p: 215.283.9444
>
> www.mcmtrans.com
>
> ------------------------------------------------------------------------
>
> *From:* mapguide-users-bounces at lists.osgeo.org 
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Andy 
> Morsell
> *Sent:* Friday, May 18, 2007 12:39 PM
> *To:* 'MapGuide Users Mail List'
> *Subject:* RE: [mapguide-users] Navigation Example .NET
>
>  
>
> The execution of the API functions must happen server side in this 
> instance.  But, it looks like you could put your .NET conditional code 
> in the gotopoint.aspx page and it would work.  The OnPageLoad() 
> javascript function would fire afterwards so all should behave 
> smoothly.  And, you would not have to programmatically refresh the map 
> since that will happen with the ZoomToView anyway.
>
> Andy
>
> ------------------------------------------------------------------------
>
> *From:* mapguide-users-bounces at lists.osgeo.org 
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Berdel, 
> Brian
> *Sent:* Friday, May 18, 2007 9:28 AM
> *To:* MapGuide Users Mail List
> *Subject:* RE: [mapguide-users] Navigation Example .NET
>
> Thanks for the response.  I am looking for a way to achieve this on 
> the client side. I do not want to check until after the user has 
> clicked on link. (such as putting it in the gotopoint.aspx page). Will 
> this work here?
>
>  
>
> Brian Berdel
>
> McMahon Associates, Inc.
>
> p: 215.283.9444
>
> www.mcmtrans.com
>
> ------------------------------------------------------------------------
>
> *From:* mapguide-users-bounces at lists.osgeo.org 
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Andy 
> Morsell
> *Sent:* Friday, May 18, 2007 11:40 AM
> *To:* 'MapGuide Users Mail List'
> *Subject:* RE: [mapguide-users] Navigation Example .NET
>
>  
>
> You should be able to use the MgLayer::IsVisible function to check the 
> visibility and then SetVisible to turn it on.  You will then have to 
> refresh the map to reflect the change.
>
>  
>
> Andy Morsell, P.E.
> Spatial Integrators, Inc.
> http://www.SpatialGIS.com
>
> ------------------------------------------------------------------------
>
> *From:* mapguide-users-bounces at lists.osgeo.org 
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Berdel, 
> Brian
> *Sent:* Friday, May 18, 2007 8:00 AM
> *To:* MapGuide Users Mail List
> *Subject:* [mapguide-users] Navigation Example .NET
>
> Anyone know how I would go about checking to see if a layer was on in 
> the navigation example and if it is not turn it when clicking a link.
>
>  
>
> Thanks!
>
>  
>
> Brian Berdel
>
> McMahon Associates, Inc.
>
> p: 215.283.9444
>
> www.mcmtrans.com
>
>  
>
> ------------------------------------------------------------------------
>
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